A few weeks ago I created a strip board version of the Art Harrison Cacophonator. I have posted the diagrams so others may build this amazing device and enter the exciting field of Cacophony Oscillation!

Many thanks to Art for his correspondence and consent to posting these images.

hahaha, "Strip Board Jedi" - that's funny minus. As I mentioned to you in the chatroom, I really like your artistry in creating that old paper look in Adobe Illustrator. You have real talent, or so it appears. The look of the documentation you created is really compelling. Well done.

As far as compacting a stripboard in a way which lends itself perfectly to being illustrated in an aesthetically superior way,.......... I would say "Built your lightsaber you have!" May the force be with you, always! _________________What makes a space ours, is what we put there, and what we do there.

Just thought I should post an update in case anyone builds this thing! I had wiring issues on my colour change LED I used and had to replace it. In the process I tried the Cacophonator without the LED and noticed a HUGE difference in the time it takes for the large capacitor to discharge once the machine is turned off!

My recommendation is to omit the LED completely. The LED severely shortens the capacitor discharge time and much of the interesting noise the Cacophonator is capable of...

You could also try just upping the current limiting resistor on the LED, (R15) and/or upping the value on the main decoupling cap. (the one across the power input)(C7) _________________What makes a space ours, is what we put there, and what we do there.

Really? C7 is pretty huge at 2200uF! Not sure what I'd up it to? ....oh, wait a minute... This isn't some kind of electrical engineers joke you play on your apprentice is it? You know.... the left handed screwdriver, or the tin of checkered paint.

Sorry, I didn't notice it was so big to start with.
Yeah, you can up the resistor so the cap discharges slower when the power is disconnected. The LED will be dimmer, but it's just to indicate power on, not for a light show.
Still, I spose getting rid of it completely would be a simpler option. _________________What makes a space ours, is what we put there, and what we do there.

I may be wrong, but shouldn't C4 connect to pin 9 (Input of osc4) rather than pin 10? And I think there' s a strip break missing in the 3rd row down - as it is, R14/C11 are linked to the +ve end of C6.

I built it and can verify that it does work. I'm away from home for a couple more days but will open up my box when I get home and double check the drawings with the build. If I find any mistakes in the drawings I shall correct them and let you know!

In the meantime if you have had any luck in finding a fault, let us know.

I may be wrong, but shouldn't C4 connect to pin 9 (Input of osc4) rather than pin 10? And I think there' s a strip break missing in the 3rd row down - as it is, R14/C11 are linked to the +ve end of C6.

Love the introduction.

Peter

Just looking at the drawing now...

Yes, judging by Art's schematic, it does indeed look like I have made a mistake! C4 should go to pin 9!!!! Can't believe I missed this! Oh well, I shall fix this as soon as I get home on thursday.

And... the other things.... let me see.... yes. I think this may be wrong too! I shall have an URGENT and FINE TOOTHED COMB look over this as soon as I get home on thursday!!!!!!

Thanks for pointing this out Peter! I have not been near the net for a while and missed the comments recently. I shall fix this up very soon.

Anyway, this is a message to blu-lu , (and indeed anyone else who has experienced circuit board fires due to my clumbsy mistake X2), incase the message was not received:

Hi Blu-lu,

Firstly, I'm very sorry but there appears to be two mistakes in the Cacophonator drawings I posted!

As prgdeltablues correctly pointed out on the 24th May:
I may be wrong, but shouldn't C4 connect to pin 9 (Input of osc4) rather than pin 10? And I think there' s a strip break missing in the 3rd row down - as it is, R14/C11 are linked to the +ve end of C6.

This looks to be right to me. If you make a further cut in the stripboard on the third row down, just above the seven cuts under the IC, this should sort this problem out.

And if you move the position of C4 so the capacitor connects to PIN 9 of the IC (next pin down from shown at present), I think your Cacophonator should work.

Once again, I'm very sorry to have misled you! And apologize for the circuit board fires caused. When I return home in about 24 hours, I shall double check this and correct the drawings.

i will revise the layout according to the corections, but i broke my pinky yesterday. my whole right hAnd is now fixed and stabilized for the next 6 weeks. thanks for getting back to me, though. i - and others i think - appreciate it

Just stepped in the door.... opened up the Cacophonator and the above comment about the cap and the extra cut above the IC is indeed correct.

Hope your finger gets better soon so you can get your Cacophonator working! I believe the sonic frequencies are capable of demolishing small stone structures, increasing crop yields and animal fertility, raising the dead, and perhaps mending broken bones.... but don't hold me to it. There may be another mistake in the drawing and none of the above may be possible.

making mistakes is human, don't sweat it, you did an amazing job there!

Maybe you could upload a soundsample so people get to listen before they build, always works for me .

p.s.: Maybe you should have a peek in the lunettaforum, plenty more uses there to create mind expanding, boneshattering and even nice sounds with a 40106!_________________There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
Hunter S. Thompsonmoviesnoise

hey thanks! I have been looking at the Lunetta forum. Need to gather together some more IC's and get some spare time to experiment. I shall post some sounds a little later today.... good idea! Got another set of illustrations nearing completion for a different device. Will post soon! And also a Lunetta idea to throw out there...

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